Hi, jena-spatial-1.0.0 is now released at: http://code.google.com/p/jena-spatial/. It's an extension to Apache Jena ARQ, which combines SPARQL and simple spatial query. It gives applications the ability to perform simple spatial searches within SPARQL queries. Lucene spatial <http://lucene.apache.org/core/4_3_1/spatial/index.html> is used for the spatial data indexing and searching. Spatial indexes are additional information for accessing the RDF graph. For more information, please check the user document: user document<http://code.google.com/p/jena-spatial/wiki/JenaSpatialUserDocument> * * *Illustration*
This query makes a spatial query for the places within 10 kilometers of Bristol UK (which as latitude/longitude of 51.46, 2.6). PREFIX spatial: <http://jena.apache.org/spatial#> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> SELECT ?placeName { ?place spatial:query (51.46 2.6 10 'km') . ?place rdfs:label ?placeName } It's a GSoC 2013 project for Apache Jena. Many thanks to the mentoring of Andy Seaborne, and the valuable feedback from Marco Neumann. The project is still ongoing. We appreciate your comments and suggestions! Cheers,Ying Jiang
